Construction of Contact probe
Contact probes (also called spring pins, probes, etc.) have been used for continuity testing for electronic components. Probe pin consists of three parts: a plunger, a pipe(barrel), and a spring. The structure has a spring inside the pipe, and the tip (= plunger) strokes to make an appropriate load and contact with the electrode to be inspected, and perform the electrical inspection.
Electrical inspections range from simple open (disconnection) / short (short circuit) to current flow and high frequency measurement. The inspection target are very wide range of test ,such as semiconductors, LCD panels, raw and mounted substrates, connectors, components such as capacitors and sensors, and battery charging and discharging.
How to use contact probe
Standard contact probes are basically used in pairs with receptacles easily for replacement and wiring.
A common way to use a contact probe is to drill a hole in the resin, fill in a receptacle with connected lead wires. Finally, insert the contact probe into the socket and ready to test.
If the contact probe needs to be replaced due to abrasion of the tip, it can be replaced easily by removing and inserting the new probe.
Our lineup of contact probes and sockets are available with commonly used P = 0.45 ～ P = 2.54mm. Each lineup has a basic tip shape. (Please contact us if you want a size or tip shape that is not in the catalog. Custom products can be manufactured as made to order.)
Drilling holes in the resin for matching the size of the each probe. Refer to the product catalog for recommended hole diameters.
Assembling socket (receptacle / receptacle) on the resin board, Seiken recommends suitable shapes for fixing the socket to the board, such as press-fitting and bonding. In order to save the trouble of wiring by the user, Seiken can also provide sockets with lead wires (100mm / 300mm) in advance.
Inserting the contact probe into the socket. It can be used again only by replacing old probe to new probes, you can save labor and cost of by replacing probes.
* Skill is required when using small diameter probes. We can provide not only probes, but also products with resin machining processing, socket installation, and wiring. Please feel free to contact us for requests for resin processing
Custom-made contact probes are also available to meet your specifications and for more information, please contact
Tip selection
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Round tip. Model number：S〇-1 series. Suitable for Flexible PCB, less damage for electrical pads. |
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Needle tip. Model number：S〇-2 series. Suitable for PCB pad. |
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Flat and Inverse Cone tip. Model number：S〇-3 series. Flat is suitable for preventing damage for electrical pad or suitable for surface contact. Inverse cone is suitable for receiving contact tip. |
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3 edge chisel tips. Model number：S〇-4 series. Suitable for through hole PCB. |
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Crown tip. Model number：S〇-5 series. Suitable for multi points contact also suitable for contact mounted part lead. |
